Price will play it's part in the decision but look at the rest of the M3's package and you will see why I believe I am right about this. The M6 is among a lot of competition much the same as the M3 but it sells far less M6 than a lot of it's rivals which is the total opposite to the M3's sales against it's rivals.

The M3 is a more complete package than either the M6 or any other M model on sale.